#include"apue.h"
#include<fcntl.h>

int main(int argc , char * argv[])
{
	if(argc != 2)
		err_quit("usage: a.out <pathname>");
	if(access(argv[1],R_OK) < 0 )
		err_ret("access error for %s", argv[1]);
	else 
		printf("read access OK\n");

	if(open(argv[1],O_RDONLY) < 0 )
		err_ret("open error for %s", argv[1]);
	else printf("open for reading OK\n");

	exit(0);
}
